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      v4l-utils-1.18.0
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      <h4>
        Beyond Linux<sup>�</sup> From Scratch <span class="phrase">(System
        V</span> Edition) - Version 2020-04-02
      </h4>
      <h3>
        Chapter&nbsp;42.&nbsp;Multimedia Libraries and Drivers
      </h3>
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    <div class="sect1" lang="en" xml:lang="en">
      <h1 class="sect1">
        <a id="v4l-utils" name="v4l-utils"></a>v4l-utils-1.18.0
      </h1>
      <div class="package" lang="en" xml:lang="en">
        <h2 class="sect2">
          Introduction to v4l-utils
        </h2>
        <p>
          <span class="application">v4l-utils</span> provides a series of
          utilities for media devices, allowing to handle the proprietary
          formats available at most webcams (libv4l), and providing tools to
          test V4L devices.
        </p>
        <p>
          This package is known to build and work properly using an LFS-9.1
          platform.
        </p>
        <h3>
          Package Information
        </h3>
        <div class="itemizedlist">
          <ul class="compact">
            <li class="listitem">
              <p>
                Download (HTTP): <a class="ulink" href=
                "https://www.linuxtv.org/downloads/v4l-utils/v4l-utils-1.18.0.tar.bz2">
                https://www.linuxtv.org/downloads/v4l-utils/v4l-utils-1.18.0.tar.bz2</a>
              </p>
            </li>
            <li class="listitem">
              <p>
                Download MD5 sum: 18996bd5e9d83d47055c05de376708cd
              </p>
            </li>
            <li class="listitem">
              <p>
                Download size: 1.9 MB
              </p>
            </li>
            <li class="listitem">
              <p>
                Estimated disk space required: 97 MB
              </p>
            </li>
            <li class="listitem">
              <p>
                Estimated build time: 0.5 SBU (using parallelism=4)
              </p>
            </li>
          </ul>
        </div>
        <h3>
          v4l-utils Dependencies
        </h3>
        <h4>
          Required
        </h4>
        <p class="required">
          <a class="xref" href="../general/llvm.html" title=
          "LLVM-10.0.0">LLVM-10.0.0</a> (with target BPF)
        </p>
        <h4>
          Recommended
        </h4>
        <p class="recommended">
          <a class="xref" href="alsa-lib.html" title=
          "alsa-lib-1.2.2">alsa-lib-1.2.2</a>, <a class="xref" href=
          "../x/glu.html" title="GLU-9.0.1">GLU-9.0.1</a>, <a class="xref"
          href="../general/libjpeg.html" title=
          "libjpeg-turbo-2.0.4">libjpeg-turbo-2.0.4</a>, and <a class="xref"
          href="../x/qt5.html" title="Qt-5.14.1">Qt-5.14.1</a>
        </p>
        <h4>
          Optional
        </h4>
        <p class="optional">
          <a class="xref" href="../general/doxygen.html" title=
          "Doxygen-1.8.17">Doxygen-1.8.17</a> and <a class="xref" href=
          "sdl2.html" title="SDL2-2.0.12">SDL2-2.0.12</a>
        </p>
        <p class="usernotes">
          User Notes: <a class="ulink" href=
          "http://wiki.linuxfromscratch.org/blfs/wiki/v4l-utils">http://wiki.linuxfromscratch.org/blfs/wiki/v4l-utils</a>
        </p>
      </div>
      <div class="installation" lang="en" xml:lang="en">
        <h2 class="sect2">
          Installation of v4l-utils
        </h2>
        <p>
          Install <span class="application">v4l-utils</span> by running the
          following commands:
        </p>
        <pre class="userinput">
<kbd class="command">./configure --prefix=/usr     \
            --sysconfdir=/etc \
            --disable-static  &amp;&amp;
make</kbd>
</pre>
        <p>
          This package does not come with a testsuite.
        </p>
        <p>
          Now, as the <code class="systemitem">root</code> user:
        </p>
        <pre class="root">
<kbd class="command">make install</kbd>
</pre>
      </div>
      <div class="content" lang="en" xml:lang="en">
        <h2 class="sect2">
          Contents
        </h2>
        <div class="segmentedlist">
          <div class="seglistitem">
            <div class="seg">
              <strong class="segtitle">Installed Programs:</strong>
              <span class="segbody">cec-compliance, cec-ctl, cec-follower,
              cx18-ctl, decode_tm6000, dvb-fe-tool, dvb-format-convert,
              dvbv5-daemon, dvbv5-scan, dvbv5-zap, ir-ctl, ir-keytable,
              ivtv-ctl, media-ctl, qv4l2, rds-ctl, v4l2-compliance, v4l2-ctl,
              v4l2-dbg, and v4l2-sysfs-path</span>
            </div>
            <div class="seg">
              <strong class="segtitle">Installed Library:</strong>
              <span class="segbody">libdvbv5.so, libv4l1.so, libv4l2.so,
              libv4l2rds.so, libv4lconvert.so, v4l1compat.so, and
              v4l2convert.so</span>
            </div>
            <div class="seg">
              <strong class="segtitle">Installed Directories:</strong>
              <span class="segbody">/etc/rc_keymaps, /lib/udev/rc_keymaps,
              /usr/include/libdvbv5, and /usr/lib/libv4l</span>
            </div>
          </div>
        </div>
        <div class="variablelist">
          <h3>
            Short Descriptions
          </h3>
          <table border="0" class="variablelist">
            <colgroup>
              <col align="left" valign="top" />
              <col />
            </colgroup>
            <tbody>
              <tr>
                <td>
                  <p>
                    <a id="cx18-ctl" name="cx18-ctl"></a><span class=
                    "term"><span class=
                    "command"><strong>cx18-ctl</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a tool to handle cx18 based devices.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="decode_tm6000" name=
                    "decode_tm6000"></a><span class="term"><span class=
                    "command"><strong>decode_tm6000</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    decodes multiplexed formats from TM5600/TM6000 USB
                    devices.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="dvb-fe-tool" name="dvb-fe-tool"></a><span class=
                    "term"><span class=
                    "command"><strong>dvb-fe-tool</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a command line tool for digital TV services.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="dvb-format-convert" name=
                    "dvb-format-convert"></a><span class="term"><span class=
                    "command"><strong>dvb-format-convert</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a tool meant to convert among different file formats.
                    It is compliant with version 5 of the DVB API.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="dvbv5-scan" name="dvbv5-scan"></a><span class=
                    "term"><span class=
                    "command"><strong>dvbv5-scan</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a command line frequency scanning tool for digital TV
                    services that are compliant with version 5 of the DVB
                    API.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="dvbv5-zap" name="dvbv5-zap"></a><span class=
                    "term"><span class=
                    "command"><strong>dvbv5-zap</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a command line tuning tool for digital TV services
                    that is compliant with version 5 of the DVB API.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="ir-keytable" name="ir-keytable"></a><span class=
                    "term"><span class=
                    "command"><strong>ir-keytable</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a tool that lists the Remote Controller devices,
                    allows one to get/set IR keycode/scancode tables, test
                    events generated by IR, and to adjust other Remote
                    Controller options.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="ivtv-ctl" name="ivtv-ctl"></a><span class=
                    "term"><span class=
                    "command"><strong>ivtv-ctl</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a utility that can control many card settings, like
                    changing the inputs from tuner to svideo or composite,
                    setting video resolution or changing video mode (PAL,
                    SECAM, NTSC).
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="media-ctl" name="media-ctl"></a><span class=
                    "term"><span class=
                    "command"><strong>media-ctl</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a utility used to configure V4L2 devices.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="qv4l2" name="qv4l2"></a><span class=
                    "term"><span class=
                    "command"><strong>qv4l2</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is used to test video4linux capture devices.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="rds-ctl" name="rds-ctl"></a><span class=
                    "term"><span class=
                    "command"><strong>rds-ctl</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a utility for decoding raw RDS data from V4L2 Radio
                    devices and offers simple ways to access the received RDS
                    information.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="v4l2-compliance" name=
                    "v4l2-compliance"></a><span class="term"><span class=
                    "command"><strong>v4l2-compliance</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a compliance test tool.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="v4l2-ctl" name="v4l2-ctl"></a><span class=
                    "term"><span class=
                    "command"><strong>v4l2-ctl</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a tool to control v4l2 controls from the cmdline.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="v4l2-dbg" name="v4l2-dbg"></a><span class=
                    "term"><span class=
                    "command"><strong>v4l2-dbg</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    is a tool to directly get and set registers of v4l2
                    devices.
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="v4l2-sysfs-path" name=
                    "v4l2-sysfs-path"></a><span class="term"><span class=
                    "command"><strong>v4l2-sysfs-path</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    checks the media devices installed on a machine and the
                    corresponding device nodes.
                  </p>
                </td>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
      <p class="updated">
        Last updated on 2020-02-18 16:50:03 -0600
      </p>
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